▎ 摘　　要

NOVELTY - Preparation of graphene negative electrode material involves preparing graphite oxide flakes, ultrasonically peeling off graphite oxide flakes into graphene oxide, forming a monolayer graphene oxide suspension in water, adding ammonium bromide and ammonium persulfate to graphene oxide suspension, stirring, adding conductive hydrogel to obtained mixture, stirring, adding pyrrole monomer, stirring, dispersing obtained mixture in potassium hydroxide, stirring, filtering, drying the filtered product, washing obtained porous graphene, and drying. USE - Preparation of graphene negative electrode material used for lithium battery. ADVANTAGE - The method enables preparation of graphene negative electrode material with high strength, and improves shrinkage and collapse resistance of the porous structure of the graphene negative electrode material, prevents reduction of the lithium storage point of electrode material, and ensures high capacity effect of the battery negative electrode material.